What can be cooked from squid: quick and tasty

In the process of installing electrical wiring, especially in residential premises, it is necessary to use technologies for connecting wires and cables. This process requires some skill and knowledge. After all, an incorrect connection can lead to irreversible processes. There may be a malfunction of the general power supply, as well as fires. The fact is that a carelessly executed connection of stranded wires can lead to a fire, which in turn leads to a threat to the life and health of people. The requirements for the installation of wiring in residential buildings are spelled out in the Rules for Electrical Installations, in abbreviated form - PUE. PUE allows the use of electrical wiring in residential premises, made only with copper wires. The connection of stranded and solid wires is allowed only by crimping, welding, soldering or using crimps. In clamps, the connection is made mechanically, using screws or bolts and clamps.

Various twisting options

Unprofessional connection... This is a twisting of a stranded wire with a solid one. This type of connection is not provided for by the rules, and if such a connection of wires is detected admissions committee, then the object will simply not be accepted into operation.

Twisting a stranded copper wire in a steamed box is used as an intermediate operation before soldering or welding the junction and it is imperative to solder or make crimp connections.

However, twisting is still used and here you need to know how the correct twisting of stranded wires is performed. It is often used in emergency cases when it is not possible to professionally perform a connection, and the service life of such a connection will be short. And yet, twisting can be temporarily used only for open wiring, so that you can always inspect the junction.

Bad wire connection

There are several types of twists. When twisting, it is necessary to achieve good electrical contact, as well as the creation of mechanical tensile strength. Before proceeding with the connection of the wires, they should be prepared. Preparation of wires is carried out in the following sequence:

• insulation is removed from the wire at the junction. The insulation is removed so as not to damage the wire core. If an incision appears on the wire core, then it may break at this point;
• the bare place of the wire is degreased. To do this, it is wiped with a rag dipped in acetone;
• to create a good contact, the degreased section of the wire is stripped sandpaper to a metallic sheen;
• after connection, the wire insulation must be restored. For this, insulating tape or heat-shrinkable tubing can be used.

In practice, several types of twists are used:

• other different options connections.

In detail, about the methods of connecting single-core wires

Professional connection

Consider various options for a reliable connection according to technology: soldering, crimping, welding and terminal connection of wires. You will give up unreliable twisting when installing unsoldered boxes and other connections.

Soldering wires

The connection of copper stranded and solid wires by soldering is one of the reliable methods. With this connection, good electrical contact is created and the connection point is mechanically resistant to breaking loads. This method can be used when: splicing two damaged wires, lengthening wires, moving outlets or switches. The wires connected in this way can be used in hidden wiring. If you insulate the junction well, then such a wire is not inferior to a solid section.

The technology for such a connection is as follows:

• preparation of wires is carried out in the same sequence as before starting twisting;
• cleaning to a metallic sheen of wire sections;
• solder coating of joints (tinning);
• wires are connected with one of the types of twisting;
• twisted wires are soldered with solder;
• the place of soldering is processed with emery cloth. There should be no burrs at the soldering point that can damage the insulation;
• the junction is carefully insulated.

The wires connected in this way can be placed under the plaster. For reliability, the connection should be placed in a PVC tube.

Welding method

Welding belongs to the category of permanent connections. This type is the most reliable. It is with this method that the connection section acquires solidity. Contact resistance and mechanical strength of the connection section are no different from a solid wire. Welding is carried out both on direct and alternating current.

For professional welding of wires are used Various types welding machines, but the most widely used are inverter current machines. These devices are mobile, they are easily carried on the shoulder of an electrician, they are small in size.

Inverter devices are distinguished by a wide range of operating current regulation. The welding arc is easily ignited even at low operating currents, and is stable during the entire welding period.

Except for the welding machine for welding copper wires it is also necessary to have carbon, copper-plated electrodes.

Welding technology consists of a few simple steps. First, the insulation is removed from the wire. Then, according to the technology outlined above, the wires are twisted. The twisted wires are straightened by trimming their ends. In order not to overheat the wires and their insulation, it is necessary to remove heat during the soldering process. For this, a special clamp is used, which is connected to one of the poles of the welding machine. Welding is carried out by touching the ends of the wires of the working electrode, which is held in a welding holder connected to the other pole of the welding machine.

Crimping

When crimping, the wires are placed in special mounting sleeves, which are made of the same material as the wires. In this case, made of copper. Then the sleeves are compressed with a special tool. When the sleeve is compressed, the wires are deformed, Deforming, the wires are tightly compressed with each other. With local indentation, the wires are deformed in such a way that their individual points penetrate into each other's body. Thus, a reliable electrical contact is created and the connection point becomes mechanically strong. Crimping connect the wires that are placed in junction boxes and electrical cabinets.

For crimping, special assembly pliers are used. For connecting wires when installing wiring in residential premises, crimping pliers of the PK-16 model have gained wide popularity. To connect copper wires, connecting copper sleeves of the GM type are used. They are made of copper and are red in color.

In order for the junction not to come into contact with oxygen, it is preserved with a special technical petroleum jelly. Thus, the junction is isolated from the harmful effects of the environment. The wires will not oxidize and the connection will last a long time. The connection point can still be sealed with a heat-shrinkable tube.

Threaded connection

This type of connection, the connection of solid and stranded wires, belongs to the category of detachable connections. For this, special terminal blocks are used, consisting of both cases and devices built into them, designed for screw clamping of the wire. It is necessary to communicate or tin the wire for a reliable connection. The most widely used are when connecting end consumers. (lamps and chandeliers)

It is used to connect wires with a cross section of not more than 2.5 mm 2. With this type of terminal block, up to 8 wires can be connected at the same time. They are used to connect wires in electrical cabinets. Mainly used for light routing. Use more reliable connection options in the socket group under heavy loads.

According to clause 2.1.21. PUE, connections of wires and cables must be carried out in one of the following ways: by welding, crimping, using screw or bolted connections, or by soldering in accordance with the current instructions, approved in the prescribed manner. As you can see, "twisting" is not mentioned here at all. We can safely conclude: twisting is practically prohibited by PUE.

However, let's see why the official attitude to twisting is so unambiguous, what may be the reason for its exclusion from the list of permitted wire connection methods, because it is quite clear that this was done for a reason. Allowed: crimping, soldering, welding and screw connection. Let's start by looking at what are the features of the allowed connection methods, and how they differ from twisting.

Soldering and welding

Soldering and welding assume solidity and the maximum possible conductivity of the created permanent connection. During soldering, the formed permanent connection is formed by interatomic bonds, because when the metals to be joined are heated below their melting point, the solder is already melted, it immediately wets them and flows into the gap, after which it crystallizes.

Welding also involves the establishment of interatomic bonds between the parts to be welded, but here the metals themselves melt or undergo plastic deformation (or undergo simultaneous melting and deformation).

One way or another, now it is clear to us that both soldering and welding of wires make their pairing as complete and high-quality as possible, because the wires are combined at the atomic level, which means that for the current they are turned into a single wire, when there are no air gaps at the transition between the parts to be joined, there are no extra intermediate elements that can somehow worsen the conductivity.

Crimping and screw connection

With regard to crimping and screw connection, this implies such a strong pressing of the mating conductors to each other that the quality of the connection is almost identical in terms of conductivity to the welded joint or junction.

Yes, the tensile strength of such a connection may be less than that achievable by welding or soldering, but the achievable conductivity of the joint turns out to be almost the maximum possible, since the wires can be said to flow into each other, their metals diffuse. There is not even an intermediate element - solder, resistivity which, in principle, can be greater than the specific resistance of the metals of the wires being combined.

If the purpose of the wires to be connected is such that the wires will not carry a significant mechanical load, then crimping or screw connection in terms of conductivity is in no way inferior to welding and soldering.

Why is the twist heated

And what about the twist? Twisting will not only not allow creating a reliable, well-conducting contact, it will also not provide strength and will heat up more than the rest of the wire when any significant current passes through it.

This will happen because in the place of the twisting the wires are not connected at the atomic level, they only contact with part of their surfaces, and in some places between them there are air gaps in which oxides will necessarily form over time.

In addition, mechanically, twisting will still unravel over time, which will further aggravate the formation of oxidation products.

In the end, due to the combined action of these factors, the contact of the wires in the twist will deteriorate so much that it will be fraught with the formation of sparks and even ignition of the insulation of the wires.

Of course, if it comes on the temporary connection of wires, for example, during testing of a circuit for switching on some load or when checking a part of some device being repaired, then in these cases no one will forbid you to carefully use elementary detachable connections - twists.

Nevertheless, one should be aware of the obvious disadvantages of such a solution as twisting and the inevitable long-term consequences of its use. Therefore, please make permanent connections only in the ways permitted by the PUE.

Laying electrical wiring in the house involves connecting wires; you will need to make branches from the main network, which are necessary to provide power to electrical appliances.

How to make the right wiring connection

Connecting wires is required everywhere in rooms, in cars, devices and mechanisms, wherever there are wires. The following methods are used today:

• Twisting;
• Welding;
• Soldering;
• With the help of special blocks, terminal blocks;
• With self-clamping terminal blocks;
• With PPE caps.

What you need to know about twisting

Take a close look at the photo of the wire twist, you will see that it can be done in different ways. You will need to prepare tools: a knife to strip the insulation, pliers to make the connection secure, and you will also need electrical tape to isolate the twist.

Method - twisting the wiring with protected ends

Strip the wires at least 5 cm, cross the ends unprotected with insulation, clamp the resulting cross with pliers and twist them together, performing a rotational movement.

A common method is grooving

To get started, check out the sequence of steps on how to twist wires with your own hands. Bend the ends of the wire into small hooks, hook them together, wind one wire around the other.

Insulate the resulting twist to ensure human safety, contact reliability, prevent current leakage and eliminate short circuits.

Professionals say that these types of wire twisting can be made more durable by using the following guidelines:

Twisted contacts are additionally connected by soldering or welding, as a result, the contact acquires maximum reliability, it is almost impossible to break it. It is preferable to use soldering when both cores of the connection have a large cross-section.

WAGO terminals greatly facilitate connection, making it more efficient, they are needed when you have to figure out how to twist copper wires with aluminum. The whole procedure will take place quickly enough, while the "vagi" allow you to connect the conductors of different cross-sections, the contact will be reliable and durable.

If the DIYer is faced with the task of connecting wires in an electrical outlet or lamp, use the WAGO terminal blocks.

Thanks to PPE clamps, the reliability of the connection increases significantly, it becomes as safe as possible. These products low price so they are available at any electrical store.

Wires twisted together should not be immediately covered with a junction box. It is better to observe how the power grid works for several hours, after which it is recommended to check the temperature at the attachment point. If the connection is very hot, you need to do everything again: most likely, the contacts turned out to be unreliable.

The twist itself is not waterproof, so it is better to take a box to connect the veins inside the wall, if without it, then the twisted wires will need to be insulated with cambric.

It remains for you to determine for yourself which twisting method is better, and consider methods for isolating the knots.

What a DIYer Should Know About Soldering and Welding

Soldering is considered simply an improvement in twist, first the wires are twisted, and then they are soldered using a soldering iron with solder. Soldering advantages:

• Increasing the strength of the twist;
• Reduced resistance, which means the twist point will not heat up.

Copper stranded wiring can be easily soldered, but this method is not suitable for all wires, with the exception of twisting aluminum wires. Since soldering is fragile, you must not be negligent when performing it, otherwise you will get a poor-quality connection.

Welding is another way to improve twisting, it increases reliability, but it is also not suitable for aluminum wires. It is used for multicore copper cables with a large cross-section, the reliability of welding is considered higher compared to soldering.

When using welding, one cannot exclude the possibility of weakening the twist; under the influence of high temperatures, the performance characteristics of the metal can change.

Isolation methods

Insulation of wires is performed using various types of electrical tape, it is necessary to insulate the place of twisting and a piece of insulated wires equal to at least 2 or 3 cm.Then it will be possible to make high-quality insulation that protects against unwanted ingress of moisture on the contacts, and for this purpose, special thermal tubes are additionally used.

Insulation with thermotube

The tube with the desired length is put on one core before twisting.

Twisting is performed, after which the thermotube is shifted to the place where the contacts are connected.

It is necessary that the tube adheres to the wiring as tightly as possible, so it is heated slightly with a lighter. Under influence high temperature the thermotube will shrink, and it will be possible to ensure a tight girth of the wiring.

The advantages of all kinds of twists are the simplicity of their execution, despite the minimum equipment, they have proven to be quite reliable connections.

When good quality insulation is made, for which good duct tape has been used, the twist will last long enough. Such a connection is convenient in operation: it is detachable, which means that, if necessary, the wires can simply be twisted again.

Twisting is used in loose electrical wiring that sags, this method was adopted by motorists, in the car, the wiring is constantly exposed to vibration.

Among the disadvantages of twisting, the following should be noted:

It is not possible to connect conductors with different cross-sections, in such a connection, as a rule, there is a very high resistance, which is the reason for the constant heating of the wires and the melting of their insulating layer.

Stranded cables are difficult to twist together, which are soft and can break under any tension.

When there are multiple insulated wires in a wiring, because each core is individually insulated, the overall thickness can be very large.

Twisting is not suitable when it is necessary to connect wires made of different materials- made of copper and aluminum.

When choosing a method, it is important to take into account all sorts of nuances, only then will it be possible to get a high-quality connection with your own hands. Twisting must be done after disconnecting the power supply for safety reasons.

Photo of twisting wires

Perhaps the most cherished dream of any electrician is electrical wiring without intermediate breaks. So that from the shield to each switch or outlet a separate wire runs without connections. But this is a pipe dream - not many will like the fact that dozens of wires will be connected to the electrical panel. Yes, and it is expensive - a lot of wires are needed. Therefore, the wires are branched and connected.

Normal wiring in an apartment can have over a hundred connections. And wiring faults, as a rule, appear precisely in these connections. Therefore, great attention must be paid to the correct connection of the wires.

Ways to connect wires

Several different wires are used to connect the wires. ways:

What is the best choice for twisting wires?

To begin with, let's turn to the PUE. Paragraph 2.121 says that the correct termination, branching and connection of the cores of cables and wires must be carried out by soldering, welding, pressing or crimping (bolted, screw, etc.). That is, of all the above options, only twisting is illegal. But the twists will exist until the day there is electricity. Therefore, we will tell you about all the connection options.

Twisting

Despite the contradiction of the PUE, twisting is considered the most popular type of wire connection. The main disadvantage of twisting is gradual loosening of the fastening due to residual elastic deformation of the cable. Moreover, the transition resistance in the twist increases, the cable begins to overheat and the connection is broken. Well, if there is no fire.

But a properly made twist can last a very long time without any cause for concern. Therefore, if other connection options are not available to you, then twists can be made in the house. But only qualitatively!

Important! This option should only be used as a last resort. If possible, use other options.

It is impossible to connect in one twist wires from various materials(aluminum and copper) as well as stranded and single-core cables! For high-quality twisting, insulation is removed from two cables to a length of 70–90 mm, the wires are laid perpendicularly crosswise and twisted. If the cable diameter is small (up to one sq. Mm), then this can be done manually. But it is advisable to twist with pliers. The turns must be tight.

The remaining ends of the cable (4-6 mm) are removed with pliers by screw rotation, while the cable material is, as it were, smeared among themselves. When attaching three or more wires, the freed ends from the insulation are stacked together, parallel to each other, as tightly as possible and twisted at the ends with pliers. After that, the remaining ends are bite off in the same way. Overall size twists must be at least 12-14 diameters of twisted wires.

Then you need to do isolation twists. For this, use insulating tape, shrink or PVC tubing, or special caps. It is advisable to thread the heat-shrink tubing twice, and wind the insulating tape in at least four layers. Insulating material must grab all undamaged cable insulation - this will protect the twist from moisture and prevent slipping.

Soldering

it most time consuming option connecting wires, which requires a certain amount of experience. Better quality twist than bad soldering. Therefore, for those who have sufficient skills, we will share general information. Before soldering, the cable is cleaned of oxides, if necessary, then tinned, screwed (it may not be as tight as when twisting), treated with flux and soldered. Both aluminum and copper wires can be soldered if the correct solder and flux are selected. You do not need to choose an acidic active flux - it will certainly remain on the wires and destroy the connection over time. Soldering takes quite a long time, but the mount comes out one of the most reliable.

Welding

The most durable option twisting wires. Even with little experience, this connection option is relatively fast and simple. Welding is done with a current of any polarity with a voltage of 12-35 V. It is best to be able to regulate the welding current. For welding two copper conductors with a diameter of 1.5 sq. mm, 70 Amperes is enough, for 3 wires the voltage increases to 85-95 Amperes, for 3 wires 2.5 sq. mm, 95-110 Amperes are needed, and 4-5 of these wires already require 110-130 Amperes. With the correct welding current, the electrode does not stick, and the arc is kept fairly stable. Copper-carbon electrodes are used to connect copper conductors.

Insulation with a length of 60-70 mm is removed from the wires and connected "for welding". It differs from simple twisting in that the ends of the veins do not twist by 6-7 mm. They are straightened and clamped in parallel with each other. If three or more cores are screwed on, then all the same, only two wires should be at the end, the rest are cut along the length of the twist. This makes it easier to form a ball of melt with a weak welding machine.

Important! Welding work must be carried out in compliance with all fire and electrical safety rules with the obligatory use of protective equipment (goggles with a dense light filter or welding mask, gloves, protective clothing).

Then the twist is placed in the welding clamp and the electrode is welded. During welding, the ends of the wires must be melted until a ball of melt appears. For strong mechanical and electrical contact, the melting point must reach the main stranding zone. After cooling, the wires are insulated in a convenient way.

For wire welding, you can choose welders different types... The most convenient welding devices inverter type... Their advantages:

• have low electricity consumption;
• low weight and dimensions;
• large range of welding current regulation;
• provide a stable welding arc.

So, with a fairly large number electrical work the purchase of a welding inverter can be considered the most the best choice, this device will be useful in many other jobs as well.

PPE connection

it plastic cap where inside is a square metal wire set in a spiral cone. Often, its cavity is filled with a special grease that protects the wire from moisture and prevents oxidation. When connecting wires using PPE, it is important to correctly select the size of the clamp, taking into account the number and diameter of the wires to be connected. Usually, this information located on the packaging.

For fastening, the insulation is removed from the wires to a size slightly smaller than the length of the cap, stacked together and PPE is screwed on top. Moreover, the edges of the square spring remove the oxide layer from the surface of the core, its cone expands and, due to its elasticity, reliably clamps the wires together. For reliability, some electricians prefer to first make a regular twist, and then install PPE.

The advantage of PPE is the simultaneous fastening of wires and insulating their connection section. TO disadvantages refers to the weakening of the spring over time, which leads to an increase in contact resistance. It is not advisable to install PPE in high-current circuits.

Screw clamps

This mount is very widely used when connecting to the wires of switches, electrical outlets, lighting devices and other electrical fittings. Screw terminals are often used when assembling electrical panels , so they make it possible to make a neat and quick installation.

TO clear advantages clamps include the absence of the need to isolate the mount. With these clamps, wires of various metals (copper and aluminum) can be fastened.

Of course, there are also disadvantages. It will not be possible to install a multicore cable in the clamps - it must be pre-crimped or soldered. In addition, the screw terminals require maintenance - they need to be tightened from time to time to prevent loosening of the connection. In general, if there is a free access to the connection areas, then screw terminals are an inexpensive and reliable solution.

WAGO Terminals

This is a fairly new type of mount based on installation insulated spring clips manufactured a German company WAGO. Genuine WAGO connectors come in a wide range and include connectors of various designs, for various purposes, for a very different section, type and number of wires. Therefore, it is advisable to buy WAGO connectors in a specialized store and an indispensable verification of certificates.

The main advantages of these connectors are quick and easy installation without any special devices, as well as the simultaneous isolation of the connection and fastening of the wires.

WAGO fasteners have all the necessary tests, are certified and are widely used both in our country and around the world. Therefore, there are no serious reasons not to trust them. All cases of some problems are the wrong choice of WAGO mount for a certain load or the installation of fakes. It is on these points that you need to pay great attention when using for connection.

Crimping

This option means connecting wires using squeezes tip or tubular sleeve. Lugs and sleeves are made for cables and wires with a core diameter of 2.6-250 sq. mm. Crimping is quite convenient for fixing from the "made and forget" series, but it needs special equipment and the right choice sleeves for a specific diameter and number of wires to be bonded. In the role of a tool, crimping presses are used, as well as manual hydraulic, electrical and mechanical pliers.

For crimping, select the necessary sleeve, if required, then adjust or select the working end of the tool. The insulation is removed from the wires, the conductors are cleaned and lubricated with a special paste, a sleeve is put on and clamped. A high-quality tool clamps the entire length of the sleeve per pass, cheaper ones require several clamps at a certain distance between themselves. After that, the sleeves are insulated with heat shrink tubing or insulating tape.

Bolt fasteners

Applied in chains with increased voltage ... A washer of the required diameter is put on the bolt, then the wires are wrapped around the bolt, another washer is put on and everything is carefully clamped with a nut. If you install an additional metal washer between the cores, you can connect copper and aluminum wires together. In apartment wiring, this option is almost never used due to its bulkiness.

All completed installation connections of any type must be available for further maintenance and inspection. Correctly selected wire connection is the main guarantee of reliability. electrical wiring in an apartment or private house.

This article has a somewhat provocative title. I am sure that immediately there will be people who will write instructively, they say, twisting is illegal and according to the PUE, twisting of wires is prohibited.

Nobody argues with this. If not for the fact that, despite everything that is written in the PUE, the vast majority of wire connections on the territory of the former large Soviet country are still twisted.

I will not claim that very good twisting of wires- this is the most reliable and high-quality way of connecting wires, although they constantly try to prove it to me. It seems that someone even took a measurement and compared the voltage drop across the twist and on the whole piece of wire, so it turned out to be less on the twist. Perhaps this is something from the field of mythology among electricians. Let's just proceed from the point that good twisting can be called one of the stages and a very important element of such methods of connecting wires as, for example, soldering or welding.

Before discussing further about the correct twisting, let's dwell on what will happen if the wires are connected just like that, without technology, "how did it happen." In this case, at the point of contact of two wires occurs. There are two reasons for this - a decrease in the area cross section wires in the place of contact (mainly due to microprotrusions during connection) and the presence of an oxide film on the wires of the wire.

Oxide film- the result of the interaction of the atoms of the metal of which the vein consists with oxygen in the air. This oxide film has a very decent resistivity. The oxide film is absent only in noble metals - gold, platinum, etc. (that's why they are "noble", that they do not react with anyone). In silver, the resistivity of the oxide film is the same as that of the metal itself, therefore silver is actively used in the contacts of various electrical devices.

When the wire is heated by the current passing through it, the contact resistance increases even more, because the heat generated is not completely dissipated into environment, and also heats the wire itself, including twisting.

As a result, all this can lead to an avalanche-like process when the place of twisting heats up more and more. Here is one of the causes of fires due to the so-called "faults in the electrical wiring."

I met one case when an aluminum twist in a neighbor's dacha stood for only one day. The reason for this is not only the presence of poor-quality twisting, but also the material of the conductive core of the wire itself. the site has already been written.

The most interesting thing is that no circuit breakers and the fuses in the switchboard in this case will not help in any way, tk. they react to an increase in the current in the circuit. In our case, the current does not change, it just warms up more and more the place of contact between the two wires.

Based on this, we can conclude that good twisting of wires is necessary, first of all, so that the transition contact resistance always remains stable and does not change over time.

So what does it take to make a good wire twist?

First you need to remove the insulation without damaging the wire cores. We clean the bare section of the conductor from dirt with a clean cloth soaked in acetone or white spirit. Then we clean the veins with a metal brush or sandpaper to a metallic sheen.

Next, we twist the stripped veins with two pliers. To do this, we bend the ends of the conductors at an angle of 90 ° at a distance equal to 7-10 conductor diameters from the cut of the insulation, and put them one behind the other. We wind 5-7 turns of one core to another with pliers.

We wind 5-7 turns of another core and seal the connection with pliers, i.e. we tighten the turns of the veins in opposite directions with two pliers. Then we bend the ends of the wires tightly.

In order to make a branch, it is necessary to wind 10-15 turns of the branch core around the main core. Seal the branch with two pliers, tightening the turns of the core by moving them in opposite directions. Then bend the end of the branch strand tightly. After all these operations, the stranding will be mechanically strong and reliable.

There are many other ways to twist wires. All these methods have even been given characteristic names.

For example, here are the methods shown in one well-known book for young electricians:

The option that I described in this article, using two pliers, has been tested by practice and has never let myself down.

After creating a high-quality twist, the wires can be soldered (little used due to laboriousness), welded (in one of the articles on the site it was somehow proved that).

Good twisting is needed, for example, for a more modern and less time-consuming method of connecting wires - when used, which is a good alternative to electrical tape.

By appearance it looks like a regular cambric, which is put on a twist with a margin on both sides. Then the heat shrink tubing heats up (you can use a regular lighter for this, but it is better to use an electric hairdryer), tightly wraps around the cable and reliably insulates it.

Do the twists right!

If you have your favorite wire connection options - share and tell about it in the comments to the article!